Continuing her quest to rescue the sea creatures who have been spirited away by dark magic, secret mermaid Molly helps her friend, Animal-Keeper mermaid Phoebe, to track down the lost penguins. A clue from some friendly seals leads the mermaids into icy water, where it seems the penguins are trapped at the top of a huge iceberg. Molly must brave the deadly cold inside the iceberg if she stands a chance of reaching them - but before she can get that far she is attacked by a terrifying ice monster. Luckily, her special animal charm holds the key to a power that could defeat it. Readers will be enchanted by Molly the Secret Mermaid's daring ocean quests, full of gorgeous undersea detail and captivating characters, in this dazzling series for budding mermaids everywhere.